LM2594N-12/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2594N-12/NOPB is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, operating at a fixed switching frequency of 150 kHz. It provides a fixed 12 V output with a maximum current capability of 500 mA. The device accepts an input voltage range from 4.5 V to 40 V. It features internal frequency compensation and a fixed 1.23 V reference voltage for accurate regulation. The component is housed in an 8-pin PDIP package and supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power switch rated for 0.5 A continuous load current
• Fixed 150 kHz switching frequency minimizes external component size
• Internal frequency compensation simplifies design requirements
• Built-in thermal shutdown protects against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring buck conversion
• Pre-regulators for linear post-regulator modules
• Efficient on-card regulation for board-level DC/DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'N' corresponds to the PDIP-8 through-hole package variant rather than surface-mount options. Confirm the '-12' designation ensures the fixed 12 V output configuration. Ensure the '/NOPB' suffix indicates lead-free and RoHS compliance status as required by your assembly specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12 V output is required from an input voltage up to 40 V. The PDIP-8 package is suitable for prototyping or applications where through-hole mounting is preferred over surface mount technology. Consider the 500 mA current limit and 150 kHz frequency when designing the external inductor and capacitor values.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2594 series of SIMPLE SWITCHER regulators. The series includes adjustable versions (ADJ) and other fixed voltage outputs. The 'HV' variants in the same family support higher input voltages up to 60 V, whereas the standard LM2594 is rated for 40 V inputs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2594N-12/NOPB is functionally equivalent to the older LM2594N-12. Surface-mount equivalents include the LM2594MX-12/NOPB in SOIC-8 packaging.